Download or read book Developing a Simple and Rapid Test for Monitoring the Heat Evolution of Concrete Mixtures for Both Laboratory and Field Applications Phase III written by and published by . This book was released on 2008 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this research project is to identify, develop, and evaluate a simple, economical, and reliable calorimetry device and test method for monitoring heat evolution of pavement concrete. The project contains three phases: phase I - identifying user needs for calorimeter tests, phase II - identifying potential calorimeter devices and developing test procedures, and phase III - verifying the test procedures and the potential applications of calorimetry in field. In this report, the work done in phases I and II is briefly summarized and the study of phase III is presented. The phase III study includes three parts: (1) field calorimetry tests, (2) lab tests for the field materials, and (3) implementation of calorimetry into pavement performance prediction. The field tests were conducted at three selected sites: US 71 (Atlantic, Iowa), Highway 95 (Alma Center, Wisconsin), and US 63 bypass (Ottumwa, Iowa). A simple isothermal calorimetry and two semi-adiabatic calorimetry (AdiaCal and IQ drum) tests were conducted at these sites. The general concrete, such as slump, air content, unit weight, placement temperature, ASTM C403 set time, and pavement properties, such as subbase temperature and sawing time were also measured. In the lab tests of the field materials, nine robust mixes for each field site, with different variations in water reducer and/or fly ash dosages were developed. AdiaCal and isothermal calorimeter tests were performed for each of the robust mixes. IQ drum and ASTM C403 set time tests were conducted for selected mixes. To implement the calorimetry test results into concrete performance prediction, the HIgh PERformance PAVing (HIPERPAV) computer program was modified, the calculated hydration curve parameters from selected calorimetry tests were used as inputs for the modified HIPERPAV program, and the temperature developments of in-situ pavements were then predicted. The phase III test results confirmed the major findings drawn in the phase II study. The results indicate that both the AdiaCal and semi-adiabactic calorimetry tests can provide valuable information on concrete performance. AdiaCal calorimetry is particularly good for field concrete set time prediction, and it is sensitive to the sample temperature. Isothermal calorimetry can provide users more detailed information on cement hydration and provide more consistent test results. The thermal set times obtained from both the AdiaCal and isothermal calorimetry tests are closely related to those measured from the ASTM C403 tests. Using the calorimetry test curve as inputs for the HIPERPAV computer program, in-situ concrete pavement temperatures can be predicted adequately.
Download or read book Transition from Fluid to Solid written by and published by American Concrete Institute. This book was released on 2009 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summary: This publication contains the twelve papers presented at a full-day technical session sponsored by the American Concrete Insitute. The subject matter of these papers includes: (1) the development of concrete properties and microstructure at early ages, (2) test methods for assessing early-age volume change and cracking potential, (3) construction operations timing, (4) computer simulations of early-age behavior, and (5) mechanisms that end the concrete dormant period.
Download or read book Sustainable Fiber Reinforced Cementitious Composites for Construction and Building Materials written by Li Li and published by Frontiers Media SA. This book was released on 2023-07-26 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Material and Construction Optimization for Prevention of Premature Pavement Distress in PCC Pavements written by and published by . This book was released on 2008 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Phase I, the research team contacted each of 16 participating states to gather information about concrete and concrete material tests. A preliminary suite of tests to ensure long-term pavement performance was developed. The tests were selected to provide useful and easy-to-interpret results that can be performed reasonably and routinely in terms of time, expertise, training, and cost. The tests examine concrete pavement properties in five focal areas critical to the long life and durability of concrete pavements: (1) workability, (2) strength development, (3) air system, (4) permeability, and (5) shrinkage. The tests were relevant at three stages in the concrete paving process: mix design, preconstruction verification, and construction quality control. In Phase II, the research team conducted field testing in each participating state to evaluate the preliminary suite of tests and demonstrate the testing technologies and procedures using local materials.
Download or read book The First 5 Years April 2000 March 2005 written by Iowa State University. Center for Portland Cement Concrete Pavement Technology and published by . This book was released on 2005 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report discusses the accomplishments of the Center for Portland Cement Concrete Pavement Technology (PCC Center) at Iowa State University, which was founded in April 2000. The report discusses the advisory groups that guide the Center, and describes the facilities included in the Center. The two Center facilities are the PCC Pavement and Materials Research Laboratory and the Mobile Concrete Research Lab. The report details the combined test capability of the Center's two labs, and describes the research undertaken at the Center. Also included in the publication are long-term planning efforts and technology transfer studies.
Download or read book The Effects of Liquid Nitrogen on Concrete Properties written by Maria C. G. Juenger and published by . This book was released on 2008 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ERDA Energy Research Abstracts written by and published by . This book was released on 1977 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration. Technical Information Center and published by . This book was released on 1977 with total page 1680 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design and Control of Concrete Mixtures written by Steven H. Kosmatka and published by . This book was released on 1988 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Portland Cement Association reference, dealing with fundamentals, cold weather concreting, curing, admixtures, aggregates, mixing, and much more.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1988 with total page 968 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bulletin of the Atomic Scientists written by and published by . This book was released on 1970-06 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Bulletin of the Atomic Scientists is the premier public resource on scientific and technological developments that impact global security. Founded by Manhattan Project Scientists, the Bulletin's iconic "Doomsday Clock" stimulates solutions for a safer world.
Download or read book NBS Special Publication written by and published by . This book was released on 1968 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ceramic Abstracts written by American Ceramic Society and published by . This book was released on 1997 with total page 1058 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1981 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ACI 306R 16 Guide to Cold Weather Concreting written by ACI Committee 306 and published by . This book was released on 2016-08-25 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Highway Research Abstracts written by and published by . This book was released on 1993 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1974 with total page 1298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
